CN1894505A - Crank gear for a reciprocating compressor - Google Patents

Crank gear for a reciprocating compressor Download PDF

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Publication number
CN1894505A
CN1894505A CNA2004800375238A CN200480037523A CN1894505A CN 1894505 A CN1894505 A CN 1894505A CN A2004800375238 A CNA2004800375238 A CN A2004800375238A CN 200480037523 A CN200480037523 A CN 200480037523A CN 1894505 A CN1894505 A CN 1894505A
Authority
CN
China
Prior art keywords
crank gear
connecting rod
series
axis
reciprocating compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2004800375238A
Other languages
Chinese (zh)
Inventor
N·坎波
S·普拉特西
F·格拉兹亚尼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nuovo Pignone Holding SpA
Original Assignee
Nuovo Pignone Holding SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nuovo Pignone Holding SpA filed Critical Nuovo Pignone Holding SpA
Publication of CN1894505A publication Critical patent/CN1894505A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/06—Engines with means for equalising torque
    • F02B75/065—Engines with means for equalising torque with double connecting rods or crankshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/02—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18184—Crank, pitman, and lever

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

Crank gear (10) for a reciprocating compressor of the type equipped with at least one module which has two lines with two opposite cylinders. The crank gear is suitable for constraining the two cylinders to a crankshaft (20), so as to align the two cylinders, opposite each other with respect to an axis (21) of the shaft (20). The crank gear (10) is equipped with two rods (35), a series of connecting rods (30) and two cross heads (40) and (50). The series of identical connecting rods (30) is symmetrically positioned with respect to the alignment axis (25) of the two cylinders and furthermore the overall barycentre of the series of connecting rods lies on the axis (25) and on the axis (21) of the shaft (20) so that the whole of the shaft (20) is both statically and dynamically balanced.

Description

The crank gear that is used for reciprocating compressor
Technical field
The present invention relates to a kind of crank gear that is used for reciprocating compressor, especially have the reciprocating compressor of relative cylinder.
Background technique
When the work of reciprocating compressor, dynamic force is to produce like this, for example the inertial force of the parts of the centrifugal force of rotary component and alternation.
Dynamic force, and relevant moment can cause its foundation shakiness, may cause excessive vibration and overweight pressure in some applications.
A kind of method that weakens above-mentioned defective is balance rotating parts and the parts that are limited in the alternation on two rightabout axis on the crank shaft.
Generally be to obtain above-mentioned effect by counterbalance being set with being integral with crank shaft.
Crank gear comprises two towards opposite cylinder, and their each settings on an axis.
Every axis comprises a connecting rod, and its first end is connected on the crank shaft, and its second end is connected on the cylinder.
Described crank gear comprises at least one module, and wherein each comprises having two two axis towards opposite cylinder successively.
Usually cylinder is not to arrange in line, so the inertial force of the parts of alternation produced one freely for two each in opposite cylinder, moment that can't balance.
This has just caused vibration and overweight pressure.
Therefore made crank gear in order to weaken such adverse effect.It has a crosshead and is connected to and makes two of the compressor module on two connecting rods towards the axis of opposite cylinder in line.
So, connecting rod must some be different so that optimize performance and obtain consistent reliability.
A defective of the known crank gear that is used for reciprocating compressor is that because they use different connecting rods, rotating shaft is unbalanced.
Another defective is to be provided with and is used for the analog system of connecting rod for indication rotary component performance, and it is used for the balance rotating shaft.
Therefore this just causes inaccuracy ground balance quality, because the performance of the rotary component of connecting rod is similar to.
Summary of the invention
The object of the present invention is to provide a kind of crank gear that can obtain consistent reliability that is used for reciprocating compressor.
Another purpose provides a kind of crank gear that is used for the horizontal obstruction that can reduce reciprocating compressor itself of reciprocating compressor.
Also have a purpose to provide a kind of can optimizing and the balance of convenient compressor itself, improving the precision of itself operating and the crank gear of accuracy of reciprocating compressor that be used for.
By providing a kind of crank gear that is used for reciprocating compressor as claimed in claim 1 just can reach relevant these purposes of the present invention.
The more feature of the present invention will be described in detail in claim subsequently.
Accompanying drawing and nonrestrictive description by subsequently will become very obvious about the feature and advantage of the crank gear that is used for reciprocating compressor of the present invention, and the subsidiary schematic accompanying drawing that relates to is as follows.
Description of drawings
Fig. 1 is the preferred embodiment sectional view that is used for the reciprocating compressor crank gear according to the present invention.
Embodiment
With reference to figure 1, when shown in be used for the crank gear 10 of reciprocating compressor, can use module on it, does does described module comprise and have two two axis of operation towards opposite cylinder?
Described crank gear is suitable for two limiting cylinders on crank shaft 20, and they are kept mutually relatively with respect to the axis 21 of axle 20.
Described crank gear 10 comprises two bars 35 and a series of connecting rod 30, first end 31 of each connecting rod all is connected on the axle 20 separately, and second end 32 separately is connected on of two bars 35, and each of two bars 35 is connected again in two cylinders one separately.
Described a series of connecting rod 30 comprises the alignment axis 25 symmetrically arranged identical connecting rods 30 with respect to two cylinders.
In addition, the connecting rod 30 of described a series of connecting rod 30 is connected on two bars 35 in couples by two crossheads that are respectively crosshead 40 and crosshead 50.
Connecting rod 30 preferably is connected on crosshead 40 and the crosshead 50 in couples separately by two corresponding pins that are equipped with.
It is terminal and with respect to the center line of their main bodys in line that described two pins preferably are arranged on the main body of each crosshead 40 and crosshead 50.
According to the preferred embodiments of the present invention, described a series of connecting rods 30 are 4 identical connecting rods.
The quantity that the connecting rod 30 of described a series of connecting rod 30 is arranged to equate with respect to the axis 21 of axle 20 and arrange symmetrically with respect to the alignment axis 25 of two cylinders.
In addition, the overall center of gravity of the connecting rod 30 of whole series all is positioned on the axis 21 of axis 25 and axle 20.
Use the connecting rod of single type, especially identical connecting rod 30 under the identical operations condition, can make crank gear 10 obtain on the function and structural symmetry.
This just makes the design of connecting rod itself obtain optimization, has also obtained consistent reliability simultaneously.
The accuracy of described axle 20 balances and dependence institute tool using precision, thereby be improved thereupon.
No matter being static state or dynamic described axle, crank gear 10 all is subjected to balance in fact.
Obtain described shaft balancing by a common rotor balace weight, remove necessity that simulator is installed for the rotatable parts of connecting rod for indication quality from.
Each connecting rod 30 of series connecting rod 30 manufactures in the accuracy limitations of the instrument of measurement has identical inertial properties, quality and barycenter.
Remaining member of at least one module of described reciprocating compressor, just, crosshead 40 and crosshead 50, two bars 35, two relative cylinders and possible ballast do not illustrate in the drawings, are that each that preferably manufacture for two lines of described at least one module all has same quality yet.
The special crank gear of describing in detail among the present invention can use special crosshead to reduce the horizontal obstruction of machine, is particularly conducive to large-sized compressor.
It can be seen that the relevant crank gear that is used for reciprocating compressor of the present invention can reach top pointed purpose.
Multiple correction and conversion can be applied to the crank gear that is used for reciprocating compressor of the present invention, and these also all think to be included within the scope of the present invention.
In addition, especially, employed material comprises size and element equally, also can carry out multiple conversion according to the needs of technology.

Claims (8)

1, a kind of crank gear (10) that is used for reciprocating compressor, be suitable for two cylinder restrictions of reciprocating compressor module are arranged on the crankshaft (20), make them relative mutually with respect to the axis (21) of axle (20), described crank gear (10) comprises two bars (35) and a series of connecting rod (30), first end (31) of each connecting rod all is connected on the axle (20) separately, and second end (32) separately is connected on of two bars (35), each of two bars (35) is connected again in two cylinders one separately, it is characterized in that, described a series of connecting rod (30) comprises the symmetrically arranged identical connecting rod of alignment axis (25) (30) with respect to two cylinders, its feature is that also the connecting rod (30) of described a series of connecting rods (30) is connected on two bars (35) separately in couples by two crossheads that are respectively crosshead (40) and crosshead (50).
2, crank gear as claimed in claim 1 (10) is characterized in that, described a series of connecting rods (30) are connected on crosshead (40) and the crosshead (50) in couples separately by two corresponding pins that are equipped with.
3, crank gear as claimed in claim 2 (10) is characterized in that, it is terminal and with respect to the center line of their main bodys in line that described two pins are arranged on the main body of each crosshead (40) and crosshead (50).
4, crank gear as claimed in claim 1 (10) is characterized in that, described a series of connecting rods (30) are 4 identical connecting rods.
5, crank gear as claimed in claim 1 (10) is characterized in that, the quantity that the connecting rod (30) of described a series of connecting rods (30) is arranged to equate with respect to the axis (21) of axle (20).
6, the described crank gear of arbitrary as described above claim (10) is characterized in that, the overall center of gravity of the connecting rod of whole series (30) is positioned on the axis (21) of axis (25) and axle (20).
7, a kind of reciprocating compressor comprises that at least one is provided with the module of the described crank gear of arbitrary as described above claim (10), it is characterized in that, described axle (20) is static and transient equiliblium.
8, a kind of crank gear (10) that is used for reciprocating compressor, it is shown in the description of front and diagram and be used for above-mentioned appointment purpose.
CNA2004800375238A 2003-12-17 2004-12-06 Crank gear for a reciprocating compressor Pending CN1894505A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2003A002493 2003-12-17
IT002493A ITMI20032493A1 (en) 2003-12-17 2003-12-17 HANDLING FOR AN ALTERNATIVE COMPRESSOR.

Publications (1)

Publication Number Publication Date
CN1894505A true CN1894505A (en) 2007-01-10

Family

ID=34685621

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2004800375238A Pending CN1894505A (en) 2003-12-17 2004-12-06 Crank gear for a reciprocating compressor

Country Status (7)

Country Link
US (1) US20080276737A1 (en)
EP (1) EP1706618A1 (en)
JP (1) JP2007514889A (en)
CN (1) CN1894505A (en)
CA (1) CA2549933A1 (en)
IT (1) ITMI20032493A1 (en)
WO (1) WO2005059363A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966511A (en) * 2012-11-12 2013-03-13 青岛大学 Dynamic balance type internal combustion air compressor
CN103727196A (en) * 2014-01-16 2014-04-16 沈阳远大压缩机股份有限公司 Complete-equilibrium-type crankshaft transmission device and compressor thereof
CN104919155A (en) * 2012-11-22 2015-09-16 斯卡尔佐汽车研究股份公司 Internal combustion engine with asymmetric port timing
CN105840461A (en) * 2016-05-20 2016-08-10 沈阳远大压缩机股份有限公司 Balanced type crankshaft driving device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330658A (en) * 2011-07-11 2012-01-25 加西贝拉压缩机有限公司 Connecting rod installation structure applied to opposed double-cylinder refrigeration compressor
JP6449576B2 (en) * 2014-07-11 2019-01-09 国立大学法人 東京大学 Positive displacement machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1023818A (en) * 1950-04-20 1953-03-24 Improvements to reciprocating machines and motors, and in particular to those which include at least one pair of opposing cylinders
GB1212324A (en) * 1968-05-14 1970-11-11 Nuovo Pignone Spa Improvements in or relating to compressors
DE3132144A1 (en) * 1981-08-14 1983-03-03 Volkswagenwerk Ag, 3180 Wolfsburg Arrangement for the complete mass balancing of a reciprocating-piston crankshaft machine
US5062311A (en) * 1991-03-29 1991-11-05 Dresser-Rand Company Frame, crankshaft and crosshead assembly, and a crankshaft and crosshead frame, for a reciprocating-piston machine
US6202537B1 (en) * 1999-07-13 2001-03-20 Caterpillar Inc. Connecting rod for horizontally opposed compressor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966511A (en) * 2012-11-12 2013-03-13 青岛大学 Dynamic balance type internal combustion air compressor
CN102966511B (en) * 2012-11-12 2014-12-31 青岛大学 Dynamic balance type internal combustion air compressor
CN104919155A (en) * 2012-11-22 2015-09-16 斯卡尔佐汽车研究股份公司 Internal combustion engine with asymmetric port timing
CN104919155B (en) * 2012-11-22 2018-05-29 斯卡尔佐汽车研究股份公司 Internal combustion engine with asymmetric gas port sequential
CN103727196A (en) * 2014-01-16 2014-04-16 沈阳远大压缩机股份有限公司 Complete-equilibrium-type crankshaft transmission device and compressor thereof
CN105840461A (en) * 2016-05-20 2016-08-10 沈阳远大压缩机股份有限公司 Balanced type crankshaft driving device
CN105840461B (en) * 2016-05-20 2017-11-24 沈阳远大压缩机有限公司 Balanced type crank gear

Also Published As

Publication number Publication date
WO2005059363A1 (en) 2005-06-30
EP1706618A1 (en) 2006-10-04
JP2007514889A (en) 2007-06-07
ITMI20032493A1 (en) 2005-06-18
WO2005059363A8 (en) 2006-07-27
US20080276737A1 (en) 2008-11-13
CA2549933A1 (en) 2005-06-30

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication